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Tap water quality report

Harris County Ud 6

EPA monitoring tested this supplier for 109 contaminants and detected 25. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
25
detected
11,262
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
SWP
Ownership
Local government
Counties served
Harris

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2010-10-01
MR Monitoring Resolved 1992-07-01 → 1993-06-30
MR Monitoring Archived 1991-09-01 → 1991-09-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0091 µg/L 4/4 2025
Pfhxa 0.0047 µg/L 3/4 2025
Pfpea 0.0051 µg/L 3/4 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
11.665 µg/L
No EPA limit set
worst single sample: 12.5 µg/L
110/110 SYR4 2012–2019
Chloroform
31.71 µg/L
No EPA limit set
worst single sample: 61.7 µg/L
110/110 SYR4 2012–2019
Dichloroacetic Acid
33.19 µg/L
No EPA limit set
worst single sample: 47.4 µg/L
102/102 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
44.13 µg/L 74%
of the EPA limit 60 µg/L
worst single sample: 59.8 µg/L
102/102 SYR4 2012–2019
TTHM
40.3 µg/L 50%
of the EPA limit 80 µg/L
worst single sample: 69.5 µg/L
101/102 SYR4 2012–2019
Dibromochloromethane
4.205 µg/L
No EPA limit set
worst single sample: 4.9 µg/L
100/110 SYR4 2012–2019
Trichloroacetic Acid
10.715 µg/L
No EPA limit set
worst single sample: 13.1 µg/L
100/102 SYR4 2012–2019
Dibromoacetic Acid
2.7 µg/L
No EPA limit set
worst single sample: 3.9 µg/L
81/102 SYR4 2012–2019
Copper
330 µg/L 25%
of the EPA limit 1300 µg/L
worst single sample: 1500 µg/L
48/62 SYR4 2013–2019
Lead
18.983 µg/L 127%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 220 µg/L
23/62 SYR4 2013–2019
Nitrate
1040 µg/L 10%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Monochloroacetic Acid
7.15 µg/L
No EPA limit set
worst single sample: 7.8 µg/L
14/102 SYR4 2012–2019
Bromoform
1.445 µg/L
No EPA limit set
worst single sample: 1.5 µg/L
12/110 SYR4 2012–2019
Lead
0.0017 mg/L 12%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Simazine
0.1670 µg/L 4.2%
of the EPA limit 4 µg/L
worst single sample: 0.1700 µg/L
7/11 SYR4 2012–2019
Atrazine
0.3375 µg/L 11%
of the EPA limit 3 µg/L
worst single sample: 0.3500 µg/L
6/11 SYR4 2012–2019
Barium
66.92 µg/L 3.3%
of the EPA limit 2000 µg/L
worst single sample: 68.7 µg/L
3/3 SYR4 2016–2019
Nitrate-Nitrite
683 µg/L 6.8%
of the EPA limit 10000 µg/L
worst single sample: 710 µg/L
3/3 SYR4 2012–2015
Fluoride
504.5 µg/L 13%
of the EPA limit 4000 µg/L
worst single sample: 520 µg/L
2/2 SYR4 2014–2017
Cyanide
20 µg/L 10%
of the EPA limit 200 µg/L
 1/2 SYR4 2014–2017
Combined Radium (-226 And -228)
2 pCi/L 40%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Gross Beta Particle Activity
4.2 pCi/L
No EPA limit set
 1/2 SYR4 2012–2018
84 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WATKINS, REBECCA
Phone
713-860-6400

Frequently asked questions about Harris County Ud 6

Is Harris County Ud 6 tap water safe to drink?

EPA monitoring detected 25 contaminants in Harris County Ud 6's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Harris County Ud 6's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dichloroacetic Acid, Total Haloacetic Acids (HAA5), TTHM, and others. The full list with the level and data source for each is above.

How many people does Harris County Ud 6 serve?

Harris County Ud 6 reports serving 11,262 people in Texas, per its EPA record.

Has Harris County Ud 6 had any water quality violations?

The EPA has 3 violations on file for Harris County Ud 6, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.